Anticreeping rail and cooperating tie plate for railways



Dec. 16, 1930. A. M. EEEEEE ON ,7 7 RATING T Ja 20, l

IE PLATE F0 930 2 Sheets-Sheet l TICREEPING RAIL AND COOPE Dec. 16,1930. A. M. PETERSON 1,784,846

ANTICREEPING RAIL AND COOPERATING TIE PLATE FOR RAILWAYS Filed Jan. 20,1930 2 Sheets-Sheet- 2 R mmmunm {DUDE U All Marxian- JUN im PatentedDec. 16, 1930 UNITED STATES AXEL M. PETERSON, 01 DENVER, COLORADOANTICREEPING RAIL AND COOIERATING TIE PLATE FOR RAILWAYS Applicationfiled January 20, 1930. Serial No. 422,025.

My invention relates to an anticreeper rail and cooperating tie platefor railways and is designed as an improvement over Patent No. 1,671,377for an anticreeper rail and tie plate construction for railways, whichwas granted to me on May 29, 1928.

The main object of the present invention is to provide an improved tieplate and cooperating rail which connects with the said is tie plate insuch manner as to prevent creeping of the said rail in either directionbeyond the natural expansion and contraction due to temperature. 7

Further, to provide a tie plate having a series of elongated teeth and arail having corresponding teeth formed in its base flange but flush withthe surface thereof, which interlock' with the teeth on the said plate,the rail beingspiked to the tie in the usual manner, the spikespassing'through' the said plate,

whereby creeping of the rail in either direction is prevented; the platebeing also secured to the cross tieiby lag screws whereby upwardmovement of the plate, dueto vibratory action and the consequentloosening ofthe spikes is prevented.

Further, to provide-a plate of thischaracter having a boss of greaterheight than the teeth on said plate to form a rest for the rail toprevent the same from striking the teeth when the said rail is slid'intoposition againstthe abutment rib; I

These and other objects which will be hereinafter referred to, areaccomplished by the construction embodied in the accompanying drawingsin which,' i ig. 1 is a vertical transverse sectional view through-arail and tieplate constructedin accordance with my invention, the railand to plate being spiked to a cross tie. a Fig. 2 is a longitudinalsectional vie throughthe plate and the base portion of the rail. V 7

' Fi'gf 3 is a perspective view of the improved tie plate looking at theupper side thereof.

"Fig. 4 is a similarview looking at the under side thereof, and a Fig. 5is a bottom plan view of a portion of a rail embodying the improved.construction;

In the present practice of track construction forrailways, the railsresteither directly upon the ties or upon smooth metal plates which areplaced upon the ties and are secured tothe ties by spikes whichpassthrough holes in the plates, the heads of the spikes engagingtherail flange.) This method, however, permits creeping of the rails underthe rotary action of the car wheels, particularly on heavy grades orunder the frictional en gagement of the wheels with the rails when thebrakes have been applied, whereby the fish plates connecting theadjoining ends of the rails are frequently broken, thus permit-'- tingthe connected rails to be drawn apart or disconnected. The constructionembodied in the present application, however, positively preventscreeping of the rails by providing a locking connection between therails gndltie plates, aswill now be particularlyv set ort I 1 Referringto the accompanyingidrawings,

the letter 7. A designates the improved 1 tie plate which is rectangularin form and about ten inches long by about seven inches wide.

The upper side of this plate, near one of its short/edges, is formedwith a verticallydis-v posed transverse rib, 1, which extends the fullWidth of the plate and is about three eights of an inch high. The innerface of this rib forms an abutment shoulder for one edge of the railflange and from this shoulder the upper face of the plate has a. slightdownward inclination to' a point X and from the point'X- a slightlygreater down-' ward inclination to the adjacent short edge of the plate,asclearly shown in the drawings. The outer side of the rib 1. inclinesdown .to'the face of the plate from which point the face of the'platehas a slight do'wnward inclination to the. adjacent :short edge thereof.A plurality of longitudinally dis posed'teeth or projections Qare formedon the 'upper face of the plate and midway of its length, these teethbeing relatively long and'of slightly less width than the 'spacebetweenthem; The long edges of these teeth are slightly rounded and their endsare beveled at 7 an angle to the face of the plate. I Transverse groovesor channels 3 are formedint-he coincide with the line of the inner faceof the rib as shown most clearly in Fig. 3. The

channels 3 receive and carry off any dirt or grit that may collectbetween the teeth of the plate and rail. The inner edges of the holes 5coincide with the line 'or'point X-on the plate, the distance betweenthis point and the inner edge of the rib 1 corresponding to the width ofthe rail flange and between the holes 5, a lug or boss 6 is formed onthe plate, which is of slightly greater height than the height of theteeth 2, the purpose of this boss being later mentioned. The under sideoftheplate A is on a horizontal plane from the inner short edge of theplate; to a line Ywhich coincides with the outer edges of the holes 4and from the line Y the face of theplate inclines slightly upward to itsadjacent edge. Longitudinal ribs 7 extend from the inner edges of thespike holes 4 to the inner edges of the spike holes 5, the sides ofthese ribs being curved to a blunt edge and their ends being beveled. Asthese ribs are parallel. with the grain of the ties, they are embeddedin the tie to a slight depth when the rail is spiked, thus assisting inholding the plate against movement on the tie.'- The plate is furtherprovided with holes 8 adjacent its short edges and centrally of itswidth, and these holes extend through bosses 9 on the under sides of theplate, the faces of which are on a corresponding level with the edges ofthe ribs 7. Lag screws 10 are passed loosely throughth-ese holes andscrewed into the ties after the rail has been spiked and these screwsprevent upward movement of the plate due. to vibratory action, whichotherwise, would tend to loosen the spikes. As the ribs 7 and the bosses9 arethe only parts of the plate, in direct contact with the tie, theybecome embedded in the tie'u-nder the weight imposed upon the plate andthe plate is thus more'evenly seated upon the tie than wouldbe the caseif the entire face of the plate rested on the 'tie..

In connectionwith the improved tie plate above 'described,'I employ arail 11 which in all respects is identical with rails in present usewithth'e exception that the bottom-face of its base flange isv formedcentrally of its width with transverse elongated-teeth; 12.

A These teethare rolled into the rail in the process ofits manufactureand extend throughout the length of the rail. "The faces of these teethare flush with the bottom face of" the rail flange and parallellongitudinal channels 13 are rolled into a rail flange in the, sameoperation that forms the teeth and these channels define the length ofthe teeth and coincide withthe'channel's 8 in the tie plate. The'ends ofthe rails are cut by gauge so that when the ends of two rails join on atie plate, there will be no break in the continuity of the rail teeth 12and the two rails will join and fit down on the teeth 2 of the tieplate, the same as a single rail. The inclined upper faces of the tieplates will cause the parallel rails to incline slightly towards eachother,as will be seen by reference to Fig. 1.

In practice, the plates A are placed upon 'theties and the rail is thenlaid upon the plates but so as to rest upon the lugs or bosses 6, whichare slightly higher than the teeth 2 on the plates, sothat when therails are slid over to engage the abutment ribs 1, the edge of the railwill not strike againstthe edges of the teeth 2 ofthe plates but willpass over them until the said rail slides off from the lug, thuspermitting its teeth to interlock with the teeth of the plates andbreaking or marring the teeth on the plates is thus prevented. 7 Spikes14E of the usual type are then driven through the holes 4: and5 in: theplates and into the tie, the heads of the spikes engaging the railflange in the usual manner The lag screws 10 are then passed through theholes 8 in the plate and are screwed into the tie,their heads bearingupon the plates, thus securely holding the plates against upwardmovement due to rail vibration. Thus the plates are immovably secured tothe ties and the rails are immovably secured to the plates 7 by reasonof the interlocking engagement of the teeth 2 on the plates and theteeth 12 on the rail and creeping of the rails on the plates is therebyprevented, resulting as frequently happens inthe breaking of the fishplates which connect-the rails with the possible serious consequencesdue to such an accident, together with the time and expense necessary inrepairing such damage.

Having described my invention, what I claim new and desire to secure byLetters Patent, is V I 1. In mechanism of the character de scribed, arailway tie plate provided on: its top face with an abutment rib. fromwhich point the facehas a slight downward inclination, a row ofelongated teeth on said face at right angles to said rib, andspikereceiving holes, two of which extend through said abutment rib;parallelribs on the underside of the plate which extend at right anglesto the said abutment rib; bosses-on the underside of the platehavin-gholes extending through themand through the plate for thereception of retainingscrews; in combination with a rail having teeth onthe under side of itsbase flange and. parallel. longitudinal vgrooveswhich define the length 'ofsaid,teeth, sa-id teeth being interlockedwith the teeth on the plate, thereby to prevent creeping. of the railupon the plate, said rail base resting against saidabutment rib.

rib near one end from which point the plate diminishes in thicknesstoward the opposite end, a central row of projecting teeth at rightangles to said rib; spike receiving holes, one pair of said holes beingvcut through said rib, a boss being formed between the other two holeswhich is of greater height than said teeth; a pair of ribs on the-underside of the plate which extend at right angles to the said abutment rib,and bosses on the under sides of the plate near the ends thereof, havingholes therethrough and through the plate for the reception of retainingscrews.

In testimony whereof, I afliX my signature.

AXEL M. PETERSON.

